private void detach_Fish_Datapoints(Fish_Datapoint entity)
	{
		this.SendPropertyChanging();
		entity.Fish = null;
	}
 partial void UpdateFish_Datapoint(Fish_Datapoint instance);
 partial void DeleteFish_Datapoint(Fish_Datapoint instance);
 partial void InsertFish_Datapoint(Fish_Datapoint instance);